core/src/ru/deadsoftware/cavecraft/game/GamePhysics.java

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.Gdx;
   4 import com.badlogic.gdx.math.Intersector;
   5 import com.badlogic.gdx.math.MathUtils;
   6 import com.badlogic.gdx.math.Rectangle;
   7 import com.badlogic.gdx.math.Vector2;
   8 import ru.deadsoftware.cavecraft.CaveGame;
   9 import ru.deadsoftware.cavecraft.game.mobs.Mob;
  10 import ru.deadsoftware.cavecraft.game.objects.Player;
  11
  12 import java.util.Iterator;
  13
  14 public class GamePhysics {
  15
  16     public static final int PL_SPEED = 2;
  17
  18     private GameProc gameProc;
  19
  20     private Vector2 gravity;
  21
  22     public GamePhysics(GameProc gameProc) {
  23         this.gameProc = gameProc;
  24         gravity = new Vector2(0,.9f);
  25     }
  26
  27     private boolean checkJump(Rectangle rect, int dir) {
  28         int bl;
  29         switch (dir) {
  30             case 0:
  31                 bl = gameProc.world.getForeMap((int)((rect.x-8)/16),(int)((rect.y+rect.height-8)/16));
  32                 if (checkColl(new Rectangle(rect.x+rect.width/2, rect.y-18, rect.width, rect.height))) bl=0;
  33                 break;
  34             case 1:
  35                 bl = gameProc.world.getForeMap((int)((rect.x+rect.width+8)/16),(int)((rect.y+rect.height-8)/16));
  36                 if (checkColl(new Rectangle(rect.x+rect.width/2, rect.y-18, rect.width, rect.height))) bl=0;
  37                 break;
  38             default:
  39                 bl=0;
  40         }
  41         return (bl>0 && Items.BLOCKS.getValueAt(bl).toJump() &&
  42                 (rect.y+rect.height)-Items.BLOCKS.getValueAt(bl).getRect((int)((rect.x-8)/16),(int)((rect.y+rect.height-8)/16)).y>8);
  43     }
  44
  45     private boolean checkColl(Rectangle rect) {
  46         int bl;
  47         int minX = (int) ((rect.x+rect.width/2)/16)-4;
  48         int minY = (int) ((rect.y+rect.height/2)/16)-4;
  49         int maxX = (int) ((rect.x+rect.width/2)/16)+4;
  50         int maxY = (int) ((rect.y+rect.height/2)/16)+4;
  51         if (minY<0) minY=0;
  52         if (maxY>gameProc.world.getHeight()) maxY = gameProc.world.getHeight();
  53         for (int y=minY; y<maxY; y++) {
  54             for (int x=minX; x<maxX; x++) {
  55                 bl = gameProc.world.getForeMap(x,y);
  56                 if (bl>0 && Items.BLOCKS.getValueAt(bl).collision){
  57                     if (Intersector.overlaps(rect, Items.BLOCKS.getValueAt(bl).getRect(x,y))){
  58                         return true;
  59                     }
  60                 }
  61             }
  62         }
  63         return false;
  64     }
  65
  66     private int getBlock(Rectangle rect) {
  67         return gameProc.world.getForeMap((int)(rect.x+rect.width/2)/16, (int)(rect.y+rect.height/8*7)/16);
  68     }
  69
  70     private void playerPhy(Player pl) {
  71         pl.position.add(pl.moveY);
  72         if (checkColl(pl.getRect())) {
  73             int d = -1;
  74             if (pl.moveY.y<0) d=1;
  75             if (d==-1) {
  76                 pl.flyMode = false;
  77                 pl.canJump = true;
  78             }
  79             pl.position.y = MathUtils.round(pl.position.y);
  80             while (checkColl(pl.getRect())) pl.position.y+=d;
  81             pl.moveY.setZero();
  82         } else {
  83             pl.canJump = false;
  84         }
  85
  86         if (Items.isFluid(getBlock(pl.getRect()))) {
  87             if (!gameProc.swim) {
  88                 if (!pl.flyMode && pl.moveY.y < 9) pl.moveY.add(gravity.x / 2, gravity.y / 2);
  89                 if (!pl.flyMode && pl.moveY.y > 9) pl.moveY.add(0, -.9f);
  90             } else {
  91                 pl.moveY.add(0, -.5f);
  92                 if (pl.moveY.y<-3) pl.moveY.y = -3;
  93             }
  94         } else if (!pl.flyMode && pl.moveY.y<18) pl.moveY.add(gravity);
  95
  96         pl.position.add(pl.moveX);
  97         if (checkColl(pl.getRect())) {
  98             if (pl.canJump && !pl.flyMode) pl.position.y-=8;
  99             if (checkColl(pl.getRect())) {
 100                 if (pl.canJump && !pl.flyMode) pl.position.y+=8;
 101                 int d = 0;
 102                 if (pl.moveX.x < 0) d = 1;
 103                 else if (pl.moveX.x > 0) d = -1;
 104                 pl.position.x = MathUtils.round(pl.position.x);
 105                 while (checkColl(pl.getRect())) pl.position.x += d;
 106             }
 107         }
 108         if (pl.position.x+pl.texWidth/2<0) pl.position.x+=gameProc.world.getWidth()*16;
 109         if (pl.position.x+pl.texWidth/2>gameProc.world.getWidth()*16) pl.position.x-=gameProc.world.getWidth()*16;
 110         if (pl.position.y > gameProc.world.getHeight()*16) {
 111             pl.position = gameProc.world.getSpawnPoint().cpy();
 112         }
 113         if (CaveGame.TOUCH && checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
 114             pl.moveY.add(0, -8);
 115             pl.canJump = false;
 116         }
 117     }
 118
 119     private void mobPhy(Mob mob) {
 120         mob.position.add(mob.moveY);
 121         if (checkColl(mob.getRect())) {
 122             int d = -1;
 123             if (mob.moveY.y<0) d=1;
 124             if (d==-1) mob.canJump = true;
 125             mob.position.y = MathUtils.round(mob.position.y);
 126             while (checkColl(mob.getRect())) mob.position.y+=d;
 127             mob.moveY.setZero();
 128             if (mob.getType() > 0) {
 129                 gameProc.world.setForeMap((int)mob.position.x/16, (int)mob.position.y/16, mob.getType());
 130                 mob.position.y = -1;
 131                 mob.dead = true;
 132             }
 133         } else {
 134             mob.canJump = false;
 135         }
 136
 137         if (mob.getType()==0 && Items.isFluid(getBlock(mob.getRect()))) {
 138             if (mob.moveY.y > 9) mob.moveY.add(0, -.9f);
 139             mob.moveY.add(0, -.5f);
 140             if (mob.moveY.y<-3) mob.moveY.y = -3;
 141         } else if (mob.moveY.y<18) mob.moveY.add(gravity);
 142
 143         mob.position.add(mob.moveX);
 144         if (checkColl(mob.getRect())) {
 145             if (mob.canJump) {
 146                 mob.position.y-=8;
 147             }
 148             if (checkColl(mob.getRect())) {
 149                 if (mob.canJump) mob.position.y+=8;
 150                 int d = 0;
 151                 if (mob.moveX.x < 0) d = 1;
 152                 else if (mob.moveX.x > 0) d = -1;
 153                 mob.position.x = MathUtils.round(mob.position.x);
 154                 while (checkColl(mob.getRect())) mob.position.x += d;
 155                 if (mob.canJump) mob.changeDir();
 156             }
 157         }
 158         if (mob.position.x+mob.width/2<0) mob.position.x+=gameProc.world.getWidth()*16;
 159         if (mob.position.x+mob.width/2>gameProc.world.getWidth()*16) mob.position.x-=gameProc.world.getWidth()*16;
 160         if (mob.position.y > gameProc.world.getHeight()*16) {
 161             mob.position.y = 0;
 162         }
 163         if (checkJump(mob.getRect(), mob.dir) && mob.canJump && !mob.moveX.equals(Vector2.Zero)) {
 164             mob.moveY.add(0, -8);
 165             mob.canJump = false;
 166         }
 167 }
 168
 169     public void update(float delta) {
 170         for (Mob mob : gameProc.mobs) {
 171             mob.ai();
 172             mobPhy(mob);
 173         }
 174         for (Iterator<Mob> it = gameProc.mobs.iterator(); it.hasNext();) {
 175             Mob m = it.next();
 176             if (m.dead)
 177                 it.remove();
 178         }
 179         playerPhy(gameProc.player);
 180
 181         gameProc.renderer.camera.position.set(
 182                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 183                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 184                 0
 185         );
 186     }
 187
 188 }